<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>双向绑定 v-model select</title>
    <script src="../js/vue.js"></script>
</head>
<body>
<div id="div">
    <select v-model="name">
        <option aria-disabled>请选择</option>
        <option>北京</option>
        <option>天津</option>
        <option>上海</option>
        <option>重庆</option>
    </select>
    <p v-text="name"></p>
</div>
</body>
<script>
    let vm = new Vue({
        el: '#div',
        data: {
            name: `请选择`
        }
    });
</script>
</html>